By the way, it seems bundles are broken
If I put two items in a bundle, one woth 15$ and one 30$ and set the discount for both at 10% it says that the initial worth of the bundle is 10$ and that the final price is 9$
If I then remove the 30$ item from the bundle, I'm left with a bundle containing only one item and priced 0$.
The 30$ item has a one time license fee of 10$ so I'm guessing some numbers have been shuffled around somewhere.